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Physics
Masses and Springs
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Natural length is measured without a mass. Loaded equilibrium depends on mass, gravity and spring stiffness.
How to interact
Drag with a mouse or touch. Space/Enter picks up or drops; arrows move, Page Up/Down move further; End moves to a hook, Home returns to the shelf.
Drag a tool or use arrow keys; Page Up/Down move further. Home returns to the initial position.
Reference lines
Model notes
- A linear spring moves vertically; spring mass, collisions between masses and horizontal swinging are omitted.
- Damping represents viscous resistance; Intro and Vectors have no damping.
- Natural length, loaded equilibrium and the height used for gravitational energy are different reference levels.
- Vectors and energy bars use visual scales for comparison; use the tools to measure length and time. Mystery masses and Planet X do not reveal their answers.